Checklist of aroids (Alismatales, Araceae) from Sabah (Malaysian Borneo) Author Wong, Sin Yeng Author Joling, Jyloerica text Check List 2021 2021-06-17 17 3 931 974 http://dx.doi.org/10.15560/17.3.931 journal article 10.15560/17.3.931 1809-127X Homalomena simunii Kartini, P.C.Boyce, & S.Y.Wong Material examined. MALAYSIA – Pedalaman • Pensiangan , Sapulut Forest Reserve Gunung Maliat ; 04° 23′00″N , 116°57′00″E ; 1437 m elev.; 21 November 2006 ; Sugau et al. SAN 149526 ( SAN ) – Sandakan • Kinabatangan , Imbak Canyon Conservation Area ; 05°01′34″ N , 117°02′09″E ; 389 m elev.; 1 December 2010 ; Suzana, S. , Ubaldus, M. et al. SAN 152707 ( SAN ) – Tawau • Kalabakan , Gunung Rara , PSP 1, about 1 km from base camp; 04°58′26″N , 117°08′57″E ; 214 m elev.; 11 March 2015 ; Suzana et al. SAN 156999 ( KEP , SAN ) . Identification. Homalomena simunii differs from all other species in the genus by the semi-horizontal inflo- rescences, lax pistils, naked interstice between the staminate and pistillate flower zones and by being restricted to basalt ( Kartini et al. 2015a ). Distribution and ecology. Endemic to Sabah . Homalomena simunii occurs in lowland to lower hill evergreen perhumid forest on basalts at elevations between 200 and 390 m .